public class User {

    private final String name;

    public User(String name) {
        this.name = name;
    }

    private String firstName;

    public String getFullName(String lastName){
        String fullName = this.firstName + "," + lastName;

        System.out.println("your fullName is " + fullName);

        System.out.println("balabala");
        System.out.println("balabala");
        System.out.println("balabala");
        System.out.println("balabala");
        return fullName;
    }

    public void foo(){
        validate();
        LoadDataFromDB();
    }

    private void calc() {
        getFullName("san");
        getFullName("san");
    }

    private void LoadDataFromDB() {
        getFullName("san");
        getFullName("san");
        System.out.println("lllll");
    }

    private void validate() {
        getFullName("san");
        getFullName("san");
    }
}
